Rotary drier



L. D. WITHUN.

- ROTARY DRIEH.

APPLICATION FILED SEPT.24, 192|. v

Patented May 2, 1922.

2 SHEETS-SHEET I.

A Y 5s' L. 0. WITHUN.

ROTARY DRIER.' APPLICATION FILED SEPT. 24. 1921Kl 1 ,4 l 4,766, Pentd May 2, 1922.

. 2 SHEETS-SHEETZ.

Sme/wko@ Lawrance' G to Wit/1an @M www narran star-as rarest eer-fies.

LAWBJENCEOTTO METEEN, 0F GA3-JAC, MlCHIGA-N ROTARY Dieren.

integree.

Specification of Letters Patent. Pgsntd llfaly 2, 1922.

Application tiled-September 424, y1921. Serial No. 502,341.

the desired results in an ei'iicient manner but` at the same time, is et such simple construc- @urethane by b..

tion that it may be Ymanufactured and erected at veryY .low cost.

One embodiment of the .invention is illustrated in the accompanying drawings, in which:

Figure l shows the drier-in perspective view,

Figure 2 shows a top plan view ot the lei vice, I

Figure 3 is a side elevation partly in tion and with one .wall removed.

Figure 4 is a transverse section on line 4-4 of Figure 3,

Figure 5 is a. horizontal section oi:V

SSC-

:t part of the hopper,

Figure 6 is a fragmentary perspective viewof one of the transfer pockets,

Figure 7 is a. longitudinal section on line 7 7 of Figure 4r. ot a portion oi a drum, and Figure 8 is a :longitudinal sect-ion on lin 8:8 of Figure 4;, of va portion of a drum..

'The einer Consists et outer Wooden stand l5A comprising 'four uprights-,or legs 1 6 held. together by longitudinal .ties ,1T

transverse horizontal ties 1,8 A9 20:. Y the lower ends et the lees are provided e the floor when necessary.

is preferably .built of .angle irons. T heoutside .dimensions of this frame are Slightly less than therdimensions ofi-the stand so that it. may be held inside Oft-11.@ et @delle QS@- ner of this frame consists of an upiifrbt ang-- gie 23 and top angles Qt .for uniting the former. i

Between ythe frame 22 and the stand l5, the spaees are filled by walls whicli are preferably made oit Yasbestos or any othersuitable heat resisting material. These walls extend frOmthe `top edge oft the frame to the bottom thereof and form a complete cabi.-

at the lower endothe door and a couple of pegs 28 orv any .other suitable locking means vis provided at `the lower Yend thereot to keep the ydoor shut. The purpose ot these doors is to give access to the interior of the partsor replacement thereof.

The top ,of the .machine is .provided with.

a roof 29, also'gmade of yheatresisting mate.-

rial and it has an opening 30 with a sliding shutter 3l to cover this opening.

TheA drier is open at the bottom and placed over a grating 32 from which hot air is expelled andreceived within the drier *toY .pass through the same, and the hot air and the ymoisture from the grain will then vpass through the opening' SOat the top. instead ot being raised above the floor, vas shown in Figure 41, the machine may be let down to hopper is preferably hung upon a column i t, .i

Wardly from kthe Stand 115i. tapers downwardly has a torn ofrv said channel. penetrates the endwall of the drier.v and opens into the top drum a() `llithin the stand l5 tits a `frame .22 which toxdeliverfgrain thereto. A batlleBQ, which is made in? the shape of atlat slide of wood or metal and provided with Vdifferent sized Openings LFS placed transversely in sad Channel 137. v Thisebal .is intende@- -tQ laf@ te .ai .grain eateries .the drier The lengitudinal sides have each a l @l .37 estende-1st@ near the roof of the drier and a pipek 38 in the loot? tension legs 2l for raising the drier shoe 470 machine 'for examination kthe different anl r ing is s n the channel 37.

W7 h n the drier are placed a plurality of revoluble drums 40, 42 and 43. The machine shown in the drawings-is provided with three drums but the number may be changed as required. All the drums are of the same construction and comprise each a central shaft 44 which is journaled at each end upon t ie cross ties 18, 19 and 20 respec tively. The shafts are given a suitable inclination so that when the drums revolve, the grain will pass from one end to the other of the drums actuated by gravity and the rotation of the drums. A s will be noticed in Figure 3, this inclination is alternately to the right and left so that, for inst-ance, as shown in Figure 3, the t-op and bottom drums 40 and 43 are inclined downwardly toward the right whileV the drum 42 has the c ts alt the operation, the proper openit i same inclination downwardly toward the left.

Upon each end of the shaft 44 are bolted Z-shaped arms 45 and 46 forming spiders or braces for supporting each endof the drum. These braces are of a different length,as best seen in Figure 8, while the lower drum 43 has one pair of braces 4G eX- tending further into the drum than the braces 45 and this pair of braces are positioned at right angles to each other so that they may be bolted crosswise with regard to the shaft 44 upon the latter. At the upper end of each drum is provided a ring 47 which is of angular cross section, one shank of the angle running parallel to the shaft 44 and being bolted or riveted to the rlbraces 45 and 45; the other shanlr of the ring 47 eX- tending radially to form an inner flange at the upper end of each drum. At the other end of the drums, a plain ring 48 is provided to which the other braces 45 and 46 are bolted or riveted.

Longitudinal ribs 49 are bolted on the outside of the rings 47 and 48 and intermediary hoops 50 are bolted or riveted to these longitudinal ribs so that the shaft with the braces, rings, ribs and intermediary hoops form a rigid skeleton for the drum. Wire meshing 51 forms the cylindrical wall of each drum and this meshing is preferably reinforced at each end by mans of a thin ring 52 of galvanized iron to which the meshing is soldered and bolts 53 hold the rings and meshing together. The wire meshing issecured to the hoops and ribs by means of lashing as indicated at 59. Y

@ne end of the shaft 44 for the upper drum 40 has a sprocket wheel or lpulley 54 connected with a motor for driving the ,flirt/ee between the middle drum and tle lowermost drum but preferably at the i 1 drums. Y

1t will be seen, particularly in .Figures 'l anc 4, that the drums are staggered in transverse relation to each other, for the purpose of making the machine more compact.

As already described, the tube 38 lead ing from the hopper opens into the upper end of the upper drum 40 slightly below the axis thereof. The radial flange on the annular ring 47 at this end of the drum is provided to prevent spilling of the grain when entering the drum. The other end, being open, empties the grain that is passed through it into a pocket 60 which conveys the grain by means of a tube 51 into the upper end of the second drum 42, and at the lower end of the second drum is a similar pocket 62 for conveying the grain from the middle drum to the bottom drum, and a third pocket 63 conveys the grain from the lower end of the bottom drum to a bin or other receptacle placed outside the drier.

From the construction of this drier it will drum while the speed of the lower drums i is about twenty revolutions per minute. With this speed it is possible to dry two hundred and fifty bushels in twenty-four hours when the machine, as shown, consists of three drums of about four feet length and ten and a half inches diameter.

Having thus described the invention, what is claimed as new is:

l. ln a drum for a rotary drier, a central shaft, askelet-on rigidly secured on saidA shaft, and a perforated cylinder, having` open ends, attached to said skeleton, said skeleton comprising a pair of end rings, a plurality of vbraces connecting said rings to said shaft, longitudinal ribs secured to said rings, and intermediary hoops secured to said ribs. 1

2. ln a drum for a rotary drier, a central shaft, a skeleton rigidly secured on said cured to said rings, and intermediary hoops y secured to said ribs.

3. 1n a drum for a rotary drier, a central shaft, a skeleton rigidly secured *on said igiiiee shaft, and a perforated cylinder, having open ends, attached tov said skeleton, said skeleton comprising a pair ofl end rings, one of said rings having a flange, a plurality of braces connecting said rings to said shaft, longitudinal ribs secured to said rings, and intermediary hoops secured to said ribs.

el, In a drum for a rotary drier, a central shaft, a skeleton rigidly secured on said shaft, and a cylinder, having open ends, at# tached to said skeleton, said skeleton comprising a pair of end rings, a plurality of braces connecting said rings to said. shaft, longitudinal ribs secured to said rings, and intermediary hoops secured to said ribs, said cylinder having sides of wire mesh and reinforced ends.

5. A rotary drier having a housing with an open bottom and a plurality of inclined revoluble drums mounted therein; said housing comprising a metallic framework, a covering of heat` resisting material over and around said framework, and a stand into which said framework and covering iit and to which they are rigidly secured.

6. A rotary drier having a housing with an open bottom and a plurality of inclined revoluble drums mounted therein; said housing comprising a metallic framework, a covering of heat resisting material over and around said framework, and a stand into which said framework and covering fit and to which they are rigidly secured, said framework being provided with extension legs.

7. A rotary drier having a housing with an open bottom and a baffle on top, and a plurality of inclined revoluble drums mounted therein; said housing comprising a metallic framework, a covering of heat resisting material over and around said framework,

and a stand into which said framework and covering fit and to which they are rigidly secured.

8. A rotary drier having a housing with an open bottom and a plurality of inclined revoluble drums mounted therein; said housing comprising a metallic framework, a covering of heat resisting material over and around said framework, and a stand into which said frame work and covering fit and to which they are rigidly secured, each drum being provided with a central shaft, a skeleton rigidly secured on said shaft, and a perforated cylinder with open ends attached to said skeleton,

9, A rotary drier having a housing with an open bottom and a plurality of inclined revoluble drums mounted therein; said housing comprising a metallic framework, a covering of heat resisting material over and around said framework, and a stand into which said framework and covering fit and to which they are rigidly secured; each drum being provided with a central shaft, a skeleton rigidly secured on said shaft, and a perforated cylinder with open ends attached to said skeleton, the skeleton comprising a pair of end rings, the upper one of said rings having a radial flange, a plurality of Z- sliaped braces connecting said rings to said shaft, longitudinal ribs secured to said rings, and intermediary hoops secured to said ribs for supporting said cylinder.

l0. A rotary drier having a housing with an open bottom and a plurality of inclined revoluble drums mounted therein; sai d housing comprising a metallic framework, a covering of heat resisting material over and around said framework, and a stand into which said framework and covering fit and Y to which they are rigidly secured; each drum being provided with a central shaft, a skeleton rigidly securedon saidshaft, a perforated cylinder with open ends attached Yto said skeleton, the skeleton comprising a pair of `end rings, the upper one of said rings having a radial `flange, a plurality of Z- shaped braces connecting said rings to said shaft, longitudinal ribs secured to said rings, and intermediary hoops secured to said ribs for supporting said cylinder; a hopper near the top of said frame adapted to deliver the material into the upper end of the top drum, and transfer pockets at the-adjacent ends of each pair of drums for conveying the material from an ripper' to a lower drum and a similar pocket at the lower end of the bottom drum for conveying the material out of the drier. i

In testimony whereof I affix my signature.

LAWRENCE TTO WITHUN. [L. S.] 

